Finding the Third Proportional to 410,359.50 and 613,899

Step by Step Solution

1. Step 1: Write the proportion equation
   410,359.50 : 613,899 = 613,899 : x
2. Step 2: Convert to fraction form
   410,359.50/613,899 = 613,899/x
3. Step 3: Cross multiply
   410,359.50x = 613,899 × 613,899
4. Step 4: Simplify right side
   410,359.50x = 376,871,982,201
5. Step 5: Solve for x
   x = 376,871,982,201/410,359.50
6. Step 6: Final answer
   x = 918,394.68